Bexar County · Service area
Plumbers in San Antonio, TX
San Antonio's water comes mainly from the Edwards Aquifer, a limestone formation that makes it some of the hardest city water in Texas. Scale is the background condition for every water heater, faucet and appliance in town.
Serving Alamo Heights, Stone Oak, Southtown, Leon Valley, Northwest Side, South Side, Helotes and nearby neighborhoods.
- Emergency plumbing help
- Licensed local plumbers
- Price confirmed before work
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- Licensed local plumbing companies
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Homes and plumbing in San Antonio
Most homes are on slabs. On the north side they sit on shallow limestone, where trenching for a sewer or water line can mean cutting rock. South and east of downtown the soil turns to clay, which moves with moisture. Older neighborhoods near the center have pier-and-beam houses with galvanized pipe.
Hard water scale
Scale fills the bottom of tank water heaters, causing popping noises and early failure, and blocks tankless units that are not descaled. Softeners are common for this reason.
Slab leaks
Copper lines under slabs fail from soil movement and abrasion. Rerouting overhead is usually less disruptive than opening the floor.
Rock and repairs
Where limestone sits just below the surface, sewer line replacement takes longer and costs more, which makes trenchless lining worth asking about.
Common plumbing calls in San Antonio
Water Heater Repair
No hot water, lukewarm showers, popping noises or a leak at the tank? See what can be repaired and call to reach a local water heater plumber..
Learn moreWater Heater Replacement
Replacing a leaking or aging water heater? See how plumbers size, install and permit a new tank, and call to reach a local installer..
Learn moreSlab Leak Repair
A warm spot on the floor or a climbing water bill can mean a leak under the slab.
Learn moreLeak Detection
A high water bill, a damp wall or the sound of running water can mean a hidden leak.
Learn moreDrain Cleaning
Clogged sink, tub, shower or main drain? Learn how plumbers clear drains with cables and jetting, and call to reach a local drain cleaning plumber..
Learn more
Also available in San Antonio: emergency plumbing and all plumbing services.
San Antonio at a glance
- Area
- San Antonio, Bexar County, Texas
- Neighborhoods
- Alamo Heights, Stone Oak, Southtown, Leon Valley, Northwest Side, South Side, Helotes
- Local issues
- Hard water scale; Slab leaks; Rock and repairs
- Plumber licensing
- Plumbers are licensed by the Texas State Board of Plumbing Examiners.
- Office
- Service-area page. Work is done by independent local plumbing companies.
San Antonio plumbing questions
How often should I flush my water heater in San Antonio?
Once a year at minimum. With water this hard, sediment builds up fast, and a tank that has never been flushed may be best left alone and replaced when it fails, since stirring up heavy scale can clog the drain valve.
Does San Antonio restrict water softeners?
Softeners are allowed. Choose a demand-regenerating model, which uses less water and salt than older timer-based units, and have it plumbed so outdoor faucets stay on unsoftened water.
Guides for San Antonio homeowners
How to shut off your water in an emergency
Close the main shutoff valve, which is usually where the water line enters the house: in the basement or crawl space on the street-facing wall, in the garage, or near the water heater.
Read the guideHow long does a water heater last?
A standard tank water heater lasts about 8 to 12 years.
Read the guideWhy does my drain keep clogging?
A drain that keeps clogging has a cause that the last clearing did not remove.
Read the guide
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Need a plumber in San Antonio?
Call and tell us what's going on. Calling is free, and the plumber confirms the price before any work starts.